California earthquakes

M2.2 earthquake 13 km SW of Willits, California

A magnitude 2.2 earthquake struck 13 km SW of Willits, California on Fri, May 20, 1983, 2:26 PM PDT (21:26 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.6 2 km SSE of Point Arena, California. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.2 (md), micro
Local time
UTC
1983-05-20 21:26:36 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
39.320° N, 123.453° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 2.1 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
94°
Stations used
16

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: at least 200 in the 60 days after this one and 59 in the 30 days before it.

After

The first 60 of at least 200.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1095041. Read Mon, Sep 28, 2026, 7:05 AM UTC.